I have history of Pcos. My cycle is on average 33-35 days with 6-7 days of period. It's been like that majorly for past couple of years. Recently I missed a period. It's 14 days late. My last period was 14aug-20aug.  l always had protected sex but last intercourse was unprotected initially then followed by protection with no ejaculation. It was on 13th sept. Still after missing the period I took multiple at home tests, 27 th September latest. All were clearly negative. Previously my doctor recommended me Meprate twice daily for 5 days to initate period when I diagnosed with pcos 7 years back. Should I start that again?